Hello Sanja
It sounds like you would like to utilize dynamic content in your emails. In that case, you can populate personal data about the recipient, such as their name, using the personalization tools within the email template editor:
http://help.clickdimensions.com/free-style-editor-personalization/ (freestyle and drag and drop)
http://help.clickdimensions.com/personalization/ (block editor)
If you want to show completely different blocks of content, such as showing different images and text based on the recipient's company, you can do that by setting up conditional statements.
http://blog.clickdimensions.com/2011/02/the-power-of-dynamic-content-in-email-marketing.html
http://blog.clickdimensions.com/2013/08/advanced-dynamic-content-if-statements.html
http://blog.clickdimensions.com/2013/08/guest-post-freemarker-language-demystified.html